Tension device for loom-shuttles.



'PATENTED JAN. 24, 1905.

APPLICATION FILED JULY 6,1904.

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I YIINVENTO'R.

UNITED STATES Patented January 24:, 1905.

PATENT OFFICE.

TENSION DEVICE FOR LO OM-SHUTTLES- SPECIFICATION forming part of Letters Patent No. 780,865, dated January 24, 1905. Application filed July 6,1904:- Serial No. 215,475.

To all whom it may concern:

Be it known that I, EDWARD F. (JRAWsHAw,

a citizen of the United. States, residing at tain new and useful Improvements inTension Devices for Loom-Shuttles, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to tension devices for loom-shuttles, one of the objects being to provide'a device of the character described that shall be simple in construction and effective in operation and that will keep the filling-yarn from kinking or looping while at the same time furnishing a more even and uniform tension of the yarn as it passes from the bobbin to the delivery-eye of the shuttle.

In accordance with my invention the yarn or thread leaves the bobbin and goes through a passage-way in a partition constructed within the bobbin-chamber between the bobbin and the delivery-eye 'and'engages with a spring-controlled door or pivotal member so arranged in said passage-wayas to press the yarn or thread gently but firmly against a friction member arranged in said passage-way opposite the pivotal member, thus imparting to the yarn an equal tension.

I am aware that attempts have been made to remedy the evil' of kinks, loops, knots, float, 850., passing from the bobbin to the cloth and rendering it defective; but thus far such attempts have been attended by indifferent success, owing to the ineffective and unsatisfactory arrangement of parts.

' The details of construction by means of which I accomplish the desired results are set out in full in the specification and claims and are illustrated in the accompanying drawings, in which Figure 1 is a top plan view of a loom-shuttle, showing my invention therein. Fig. 2 is a sectional View on line 2 2 of Fig. 1.

3 is adetail of the spring-controlled door or pivotal member. 1 5

7 Like numerals of reference designate similar parts in all the figures of the drawings. l designates the loom-shuttle, 2 the bobbin,

Fig.

, and 3 the yarn or thread leading therefrom past the tension device, which is set in the bobbin-chamber directly opposite the end of the bobbin and between it and the deliveryeye, through which the thread passes from the bobbin-chamber to the loom.

4: designates a partition constructed in the bobbin-chamber between the bobbin and the inner terminal of the delivery-eye and having a passage-way 5 in the center thereof. ignatesa door or pivotal member, which is provided with an outer rounded edge 7. This pivotal member is secured in the passage-way 5 by means of a rod or pin 8 passing through the holes 9, said pin being secured in the partition by the lower end passing into a hole in the floor of the passage-way 5 and the upper end passing into a hole in the overhanging top plate 10. A rod 11 passes across the passage-way 5, near the bottom thereof, and through an aperture 12, made in the door or pivotal member 6, as shown. A helical or other suitable spring 13 is held in place by said rod 11 and presses against said pivotal member 6., holding the rounded or free end 7 gently but firmly against the thread or yarn 3, which passes from the bobbin between the rounded edge of said pivotal member and-a friction member 14:, arranged in the passageway opposite the pivotal member. The pivotal member 6 is also provided with a projecting lug 15, which prevents the escape of 'the yarn or thread 3 from the passage-way as it goes from the bobbin to the delivery-eye. A niche 16 is cut in the perpendicular edge of said passage-way, as shown, to admit said lug 15.

In operation the yarn 3 leaves the bobbin 2 and on its way to the loom goes through the passage-way 5, where it engages with the piv- 6 des-- form and arrangement of parts without departing from the principle or sacrificing any of the advantages of the invention.

Having thus described my said invention, What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a tension device for loom-shuttles, a partition in the bobbin-chamber having a passage-Way therethrough, a pivotal member secured at one side of the passage-Way, a lug on said pivotal member, a friction member arranged at the side of the passageway opposite the pivotal member, and a spring arranged to engage with and operate the pivotal member, substantially as described.

2. In a tension device for loom-shuttles, a partition arranged in the bobbin-chamber between the bobbinvand the delivery-eye, and having a passage-Way therethrough, a top plate overhanging the passage-way, a pivotal member arranged in the passageway, a lug secured to the pivotal member near the top thereof, a spring engaging with the pivotal member, and a friction member arranged at the side of the passage-way opposite the pivotal member, substantially as described.

3. In a tension device for loom-shuttles, a partition constructed in the bobbin-chamber between the bobbin and the delivery-eye, and having a passage-way therethrough, a pivotal member arranged in the passage-way, a lug secured to the pivotal member near the top thereof, a spring engaging with the pivotal member, a rod crossing the passage-way near the bottom thereof and arranged to hold the spring in place, and a friction member arranged in the passage-way opposite the pivotal member, substantially as described.

In testimony whereof I hereunto afiix my signature in presence of two witnesses.

EDW ARD F. CRAW'SI'IAIV.

Witnesses:

JosEPI-I LEWIS, FRED A. LANDER. 

